you guys have probably heard this before, but do you have to install new springs when putting in a new cam?

 

I always have because I've heard you should.
I'll let someone else get into the theory...

 

you don't "have to", but if you're using a cam that is anything of an upgrade over stock you do. So if somehow your stock cam failed, and you are putting in another stock cam (stock for that motor that is), then you might be ok. But valve springs wear out like any other internal engine component, even more so, since they are springs (well duh hey?). Anyway, it's not a big $ outlay so you might as well.

 

oh yeah one other quick question what other parts do i need to change with a new cam

 

yes, i would recommend the springs. If your going more lift, your stock springs arent going to be able to handle that.
You might want to get an Adjustable fuel pressure regulator. Also, while your in there, its a good idea to change your valve seals.